Roomba here. Had it for two years. replaced the brushes one time. Mostly hardwood floors and it has no problem with that. It tends to get hung up on a bib run under our dining room table and in the small gap under the dishwasher that my wife uses for storage. Today it went a little haywire and lost its bearings. Finally just turned it off waited just a moment then turned it back on and pressed the dock button and it went straight to the dock.